Q.(a) Describe coal as source of conventional energy in India.

Abiotic Resource – From Intuition to Precision

Imagine you are standing in a forest. Around you are trees, birds, deer, mushrooms, and insects — all living things. Now look past them. Feel the soil under your feet, the rock jutting out of the hillside, the water in a nearby stream, the air you are breathing, and the sunlight warming your skin. None of these are alive. Yet without them, the forest could not exist.

That is the core idea: abiotic resources are the non-living parts of nature that living things depend on.

The Intuition

The word abiotic comes from Greek: a- (without) + bios (life). So an abiotic resource is simply a resource that comes from the non-living world. It is not and never was alive. Think of:

• Water – rivers, lakes, groundwater, rain
• Air – the atmosphere, especially oxygen and carbon dioxide
• Soil – minerals, sand, clay, silt
• Minerals and rocks – iron ore, copper, limestone, gold
• Sunlight – solar energy
• Fossil fuels – coal, petroleum, natural gas (these come from once-living organisms, but they have been transformed by geological processes into non-living substances; they are still classified as abiotic resources because they are now inert, non-living materials)

Every time you drink water, breathe, or use a metal object, you are using an abiotic resource.

The Precise Statement

Key characteristics:

1. Non-living – never had life, or has been transformed into a non-living state (e.g., fossil fuels).
2. Naturally occurring – found in nature, not manufactured by humans (though humans may extract or process them).
3. Useful – serves a purpose, whether for survival (water, air) or for economic activity (minerals, energy).

A Quick Classification to Lock It In

Common Mistake to Avoid …

Imagine you are sitting in a room and the lights go out. The first thing you check is whether the electricity bill was paid. But what if the problem is bigger — what if the coal that powers the thermal plant has run out, or the dam has no water? That is the worry behind the word conventional energy: sources that we have used for over a century, but which are limited and will eventually finish.

Now think of the sun that beats down on your terrace every afternoon, or the wind that blows across an open field. These are not going anywhere. They are always there, and they do not get used up. That is the core idea of non-conventional energy — energy from sources that are naturally replenished and will not run out on a human timescale.

What the NCERT textbook says

The NCERT Class 10 Geography textbook (Chapter 5: Minerals and Energy Resources) introduces this distinction clearly. It groups conventional sources as those that have been in common use for a long time — firewood, coal, petroleum, natural gas, and electricity from thermal or hydro power plants. These are either exhaustible (like coal and oil) or cause significant environmental harm.

Non-conventional sources, the textbook explains, are the newer, cleaner alternatives: solar energy, wind energy, tidal energy, geothermal energy, and nuclear energy. The key point is that most of these are renewable — they do not deplete with use. The textbook also mentions that these sources are generally environmentally friendly and have lower operational costs once set up, though the initial investment can be high.

Why does this matter for a commerce/humanities student?

You might think this is a science topic, but it affects every part of your life and future career.

• Economics: The cost of energy decides the price of everything you buy — from a packet of biscuits to an airline ticket. Non-conventional energy can reduce a country's dependence on imported oil, stabilise prices, and create new industries (solar panel manufacturing, wind turbine maintenance). This is a huge factor in national budgets and trade balances.
• Business: Companies today are judged on their environmental record. A business that uses solar power or buys green energy certificates can attract customers and investors who care about sustainability. This is not just ethics — it is a market reality.
• Policy and Law: Governments offer subsidies, tax breaks, and regulations to promote non-conventional energy. Understanding this helps you grasp why certain industries grow, why electricity tariffs change, and what "carbon credits" mean in international trade. …